mirror of
https://github.com/terribleplan/next.js.git
synced 2024-01-19 02:48:18 +00:00
139 lines
3.5 KiB
JavaScript
Executable file
139 lines
3.5 KiB
JavaScript
Executable file
#!/usr/bin/env node
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import { join } from 'path'
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import spawn from 'cross-spawn'
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import arg from 'arg'
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['react', 'react-dom'].forEach((dependency) => {
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try {
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// When 'npm link' is used it checks the clone location. Not the project.
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require.resolve(dependency)
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} catch (err) {
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// tslint:disable-next-line
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console.warn(`The module '${dependency}' was not found. Next.js requires that you include it in 'dependencies' of your 'package.json'. To add it, run 'npm install --save ${dependency}'`)
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}
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})
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const defaultCommand = 'dev'
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const commands = [
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'build',
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'start',
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'export',
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defaultCommand,
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]
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const args = arg({
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// Types
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'--version': Boolean,
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'--help': Boolean,
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'--inspect': Boolean,
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// Aliases
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'-v': '--version',
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'-h': '--help',
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}, {
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permissive: true,
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})
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// Version is inlined into the file using taskr build pipeline
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if (args['--version']) {
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// tslint:disable-next-line
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console.log(`Next.js v${process.env.NEXT_VERSION}`)
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process.exit(0)
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}
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// Check if we are running `next <subcommand>` or `next`
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const foundCommand = args._.find((cmd) => commands.includes(cmd))
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// Makes sure the `next <subcommand> --help` case is covered
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// This help message is only showed for `next --help`
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if (!foundCommand && args['--help']) {
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// tslint:disable-next-line
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console.log(`
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Usage
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$ next <command>
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Available commands
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${commands.join(', ')}
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Options
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--version, -p Version number
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--inspect Enable the Node.js inspector
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--help, -h Displays this message
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For more information run a command with the --help flag
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$ next build --help
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`)
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process.exit(0)
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}
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const nodeArguments: string[] = []
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if (args['--inspect']) {
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// tslint:disable-next-line
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console.log('Passing "--inspect" to Node.js')
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nodeArguments.push('--inspect')
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}
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const command = foundCommand || defaultCommand
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const forwardedArgs = args._.filter((arg) => arg !== command)
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// Make sure the `next <subcommand> --help` case is covered
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if (args['--help']) {
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forwardedArgs.push('--help')
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}
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const defaultEnv = command === 'dev' ? 'development' : 'production'
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process.env.NODE_ENV = process.env.NODE_ENV || defaultEnv
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const bin = join(__dirname, 'next-' + command)
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const startProcess = () => {
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const proc = spawn('node', [...nodeArguments, bin, ...forwardedArgs], { stdio: 'inherit' })
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proc.on('close', (code, signal) => {
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if (code !== null) {
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process.exit(code)
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}
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if (signal) {
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if (signal === 'SIGKILL') {
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process.exit(137)
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}
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// tslint:disable-next-line
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console.log(`got signal ${signal}, exiting`)
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process.exit(signal === 'SIGINT' || signal === 'SIGTERM' ? 0 : 1)
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}
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process.exit(0)
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})
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proc.on('error', (err) => {
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// tslint:disable-next-line
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console.error(err)
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process.exit(1)
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})
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return proc
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}
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let proc = startProcess()
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function wrapper() {
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if (proc) {
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proc.kill()
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}
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}
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process.on('SIGINT', wrapper)
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process.on('SIGTERM', wrapper)
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process.on('exit', wrapper)
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if (command === 'dev') {
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const {CONFIG_FILE} = require('next-server/constants')
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const {watchFile} = require('fs')
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watchFile(`${process.cwd()}/${CONFIG_FILE}`, (cur: any, prev: any) => {
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if (cur.size > 0 || prev.size > 0) {
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// tslint:disable-next-line
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console.log(`\n> Found a change in ${CONFIG_FILE}, restarting the server...`)
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// Don't listen to 'close' now since otherwise parent gets killed by listener
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proc.removeAllListeners('close')
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proc.kill()
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proc = startProcess()
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}
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})
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}
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